function pluralize(time, label) {
    if (time === 1) {
        return time + label
    }
    return time + label + 's'
}
export function timeAgo(time) {
    const between = Date.now() / 1000 - Number(time);
    if (between < 3600) {
        return pluralize(~~(between / 60), ' minute')
    } else if (between < 86400) {
        return pluralize(~~(between / 3600), ' hour')
    } else {
        return pluralize(~~(between / 86400), ' day')
    }
}

export function formatDate(time, cFormat) {
    return parseTime(time, '{y}-{m}-{d}');
}

export function parseTime(time, cFormat) {

    if (!time) {
        return '--';
    }
    
    if (arguments.length === 0) {
        return null;
    }

    if ((time + '').length === 10) {
        time = +time * 1000
    }


    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time == 'object') {
        date = time;
    } else {
        date = new Date(parseInt(time));
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay()
    };
    const timeStr = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key];
        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
        if (result.length > 0 && value < 10) {
            value = '0' + value;
        }
        return value || 0;
    });
    return timeStr;
}

export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();

    const diff = (now - d) / 1000;

    if (diff < 30) {
        return '刚刚'
    } else if (diff < 3600) { // less 1 hour
        return Math.ceil(diff / 60) + '分钟前'
    } else if (diff < 3600 * 24) {
        return Math.ceil(diff / 3600) + '小时前'
    } else if (diff < 3600 * 24 * 2) {
        return '1天前'
    }
    if (option) {
        return parseTime(time, option)
    } else {
        return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
    }
}


/* 数字 格式化*/
export function nFormatter(num, digits) {
    const si = [
        { value: 1E18, symbol: 'E' },
        { value: 1E15, symbol: 'P' },
        { value: 1E12, symbol: 'T' },
        { value: 1E9, symbol: 'G' },
        { value: 1E6, symbol: 'M' },
        { value: 1E3, symbol: 'k' }
    ];
    for (let i = 0; i < si.length; i++) {
        if (num >= si[i].value) {
            return (num / si[i].value + 0.1).toFixed(digits).replace(/\.0+$|(\.[0-9]*[1-9])0+$/, '$1') + si[i].symbol;
        }
    }
    return num.toString();
}


export function html2Text(val) {
    const div = document.createElement('div');
    div.innerHTML = val;
    return div.textContent || div.innerText;
}


export function toThousandslsFilter(num) {
    return (+num || 0).toString().replace(/(\d)(?=(?:\d{3})+$)/g, '$1,');
}

export function timeStamp(str) {
    return (Date.parse(new Date(str))) / 1000;
}

export function payType(val) {
    //1e学 2支付宝 3微信 4卡券支付
    if (typeof val === "string") {
        return val == "1" ? 'e学云' : val == "2" ? '支付宝' : val == "3" ? '微信' : val == "4" ? '卡券支付' : ''
    }
}

export function isNull(val) {
    return val===null || val===''|| typeof val =='undefined' ? '--' : val;
}
// 去掉图片的后缀
export function filterPicName(val) {
    let newVal='';
    if (val) {
        let arr=['.png', '.jpg', '.jpeg', '.bmp'];// 图片可能有的后缀格式
        arr.forEach((item) => {
            if (val.lastIndexOf(item)!==-1) {// 如果该图片含有其中一种后缀 去掉后缀
                newVal=val.substring(0, val.lastIndexOf(item));
            }
        })
        return newVal
    } else {
        return '--'
    }
}